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Spacemarkets alternatives & similar sites

Space Markets — Markets for Orbital Infrastructure — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Space And Astronomy →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
bluedwarf.space ↗	68 match 1 shared topics	Blue Dwarf Space \| Regulatory Infrastructure for the New Space Age	en	space-and-astronomy	robotsllmsaihumans	emailphone	partial · 8
newspaceconomy.com ↗	67 match 1 shared topics	NewSpaceEconomy.com – Global Space Industry & Orbital Investment \| DomainFirm.XX	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
accessaerospace.com ↗	66 match 1 shared topics	Space & Aerospace Marketplace	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
apophis.bot ↗	65 match 1 shared topics	Apophis Orbital Simulator \| apophis.bot	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
theiasense.com ↗	65 match 1 shared topics	Optical fiber sensors for space \| Theia Sense	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
anubis.space ↗	65 match 1 shared topics	Anubis — The Story Engine for Space Industry	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
blastoff.space ↗	65 match 1 shared topics	blastoff.space — space tv	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astroscale.com ↗	65 match 1 shared topics	Astroscale \| Space for Tomorrow	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
axionorbital.space ↗	65 match 1 shared topics	AxionOrbital-Space	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
bizu.space ↗	65 match 1 shared topics	BIZU Space — Space Technologies for the Launch Industry	en	space-and-astronomy	robots llmsaihumans	emailphone	partial · 8
jatan.space ↗	64 match 1 shared topics	jatan.space 🌙	en	space-and-astronomy Ghost	robotsllmsaihumans	emailphone	none
theneomaterials.com ↗	64 match 1 shared topics	Neo Materials — From Femtoscale to Outer Space	en	space-and-astronomy	robotsllmsaihumans	email phone	none
borderplexalliancefoundation.org ↗	64 match 1 shared topics	The Borderplex Alliance Foundation \| Requests for Proposals \| Space Innovation Hub \| El Paso	en	space-and-astronomy Wix	robots llmsaihumans	emailphone	none
accessorbital.com ↗	64 match 1 shared topics	Home \| Access Orbital Solutions	en	space-and-astronomy Wix	robots llmsaihumans	emailphone	none
acmespacehub.com ↗	64 match 1 shared topics	AcmeSpace® \| Designing the Future Beyond Earth	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
thekuiperspace.com ↗	64 match 1 shared topics	Home — KuiperSpace	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
txmission.com ↗	64 match 1 shared topics	CesiumAstro \| Communications Systems for Space, Air, and Ground Missions	United States~ en	space-and-astronomy	robotsllmsaihumans	emailphone	none
mindforgeinstitute.org ↗	64 match 1 shared topics	The Mindforge Research Institute \| Space Weather Research	United States~ en	space-and-astronomy	robots llmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.